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142892970 = 23511569761
BaseRepresentation
bin10001000010001…
…01111110101010
3100221212201022020
420201011332222
5243040033340
622102405310
73353366403
oct1041057652
9327781266
10142892970
1173728670
123ba30836
13237b106c
1414d989aa
15c8289d0
hex8845faa

142892970 has 64 divisors (see below), whose sum is σ = 375269760. Its totient is φ = 34534400.

The previous prime is 142892969. The next prime is 142893061. The reversal of 142892970 is 79298241.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187390 + ... + 188150.

It is an arithmetic number, because the mean of its divisors is an integer number (5863590).

Almost surely, 2142892970 is an apocalyptic number.

142892970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142892970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187634880).

142892970 is an abundant number, since it is smaller than the sum of its proper divisors (232376790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142892970 is a wasteful number, since it uses less digits than its factorization.

142892970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 142892970 is about 11953.7847563021. The cubic root of 142892970 is about 522.8016557448.

The spelling of 142892970 in words is "one hundred forty-two million, eight hundred ninety-two thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 569 761 1138 1522 1707 2283 2845 3414 3805 4566 5690 6259 7610 8371 8535 11415 12518 16742 17070 18777 22830 25113 31295 37554 41855 50226 62590 83710 93885 125565 187770 251130 433009 866018 1299027 2165045 2598054 4330090 4763099 6495135 9526198 12990270 14289297 23815495 28578594 47630990 71446485 142892970